Best AI Email Scheduling Assistants 2026
Quick answer: CalendarBridge is our top pick. It's the cheapest assistant here you can CC ($8 a month billed yearly), and it checks the widest mix of calendars before offering a time: Google, Microsoft 365, iCloud and CalDAV. If you live in Gmail and want an assistant you can also text, Howie is the strongest alternative. If you want to pay nothing, Blockit's free plan covers 15 meetings a month.
Our picks at a glance:
- Best overall: CalendarBridge
- Best for Gmail users: Howie
- Best free plan: Blockit
- Best for Outlook and confidential client work: Clara
- Best budget CC assistant: Skej
- Best if you already use Calendly: Calendly (Callie)
- Best built-in option for Google Workspace: Gemini in Gmail (Help me schedule)
An email scheduling assistant has its own address. You CC it on a thread, and it reads the conversation, checks your calendar, offers times, chases replies and sends the invite. The ones below differ on three things: which calendars they can see (several are Google only), what they cost once you pass a free trial, and whether they'll act on their own or wait for your approval. Gemini's Help me schedule is included as the built-in alternative, though it's a button, not an assistant.
How they compare
| Tool | Best for | How you use it | Calendars | Paid from |
|---|---|---|---|---|
| CalendarBridge | Best overall | CC assistant@ai.calendarbridge.com; in-app chat | Google, Microsoft 365, Outlook.com, iCloud, CalDAV, GCC High (sync up to 20 on Premium) | $8/mo billed yearly; $10 monthly (Premium) |
| Howie | Gmail users | CC on email; iMessage/SMS | Google Calendar (Outlook not listed) | $25/mo usage credits, billed monthly |
| Blockit | Free plan; heavy schedulers on Slack | CC on email; Slack | Google, Microsoft (unlimited) | $83/mo billed yearly; $145 monthly (free: 15 meetings/mo) |
| Clara | Outlook shops, confidential client work | CC on email | Google Workspace, Outlook/Exchange (multiple) | $80/mo (30 meetings) |
| Skej | Budget CC assistant | CC (or Bcc on Premium) on email; text, Slack | Google, Microsoft (multiple on paid) | $15/user/mo billed yearly; $19 monthly |
| Calendly (Callie) | Existing Calendly users, 1:1 meetings | Add callie@calendly.com | Google, Office 365/Outlook.com, Exchange (up to 6) | $18/seat/mo billed yearly; $24 monthly (Standard Plus) |
| Gemini in Gmail | Google Workspace teams | 'Help me schedule' button in Gmail | Google Calendar only | $14/user/mo, 1-year commitment (Business Standard) |
1. CalendarBridge: Best overall
- Developer: CalendarBridge Inc (Miami, FL)
- App Store: 4.6/5 (7 ratings)
- Released: 2020 (iOS app 2025)
- Human in the loop: No human schedulers
CalendarBridge started as a calendar sync service in 2020, and its AI assistant builds on that. You CC assistant@ai.calendarbridge.com on a thread from Gmail or Outlook and it proposes times, follows up, reschedules, books rooms and sends invites with Zoom, Teams or Meet links. Before offering a slot it checks every calendar you've connected, across Google, Microsoft 365, Outlook.com, iCloud, CalDAV services such as Fastmail and Nextcloud, and Microsoft's GCC High. None of the other assistants here list iCloud or CalDAV support. It can also turn forwarded emails, screenshots and PDFs into events.
The assistant comes with Premium at $10 a month, or $8 a month billed yearly, which makes it the cheapest assistant here you can CC. That price also includes calendar sync across 20 connections and booking pages. Pro, at $40 a month, lets the assistant send from an address on your own domain. The $5 Basic plan doesn't include the assistant, and there's no free plan, only a 7-day trial. It works over email and in-app chat only, with no Slack or text channel, and its App Store rating of 4.6 comes from just 7 ratings.
Free tier
None; 7-day free trial, no credit card
Paid from
Basic $5/month ($4 billed yearly) has sync and booking pages but no AI assistant. Premium $10/month or $8/month billed yearly ($96/yr): AI assistant, 20 sync connections, HIPAA BAA. Pro $40/month or $32/month billed yearly: AI assistant with custom subdomain address, 56 sync connections. Group user licenses same per-user rates.
What works
- Cheapest assistant you can CC: $8 a month yearly
- Sees Google, Microsoft, iCloud and CalDAV calendars
- Calendar sync and booking pages included
What doesn't
- No free plan, only a 7-day trial
- Email and in-app chat only, no Slack or SMS
- Little independent review coverage so far
Video review: CalendarBridge AI Scheduling and Calendar Assistant by CalendarBridge
2. Howie: Best for Gmail users
- Developer: 3030 Labs, Inc. (Seattle, per GeekWire)
- How you use it: CC Howie on an email thread, or text/iMessage him
Howie does more than scheduling. You CC it on a thread or text it, including over iMessage, and it finds times across group threads, sends invites, chases people who go quiet, and handles holds, focus blocks, travel time and daily briefs. GeekWire reported a $6 million seed round in September 2025 with more than 1,000 paying customers, and Tool Finder's 2026 roundup of AI email assistants featured it. It's the closest thing here to a human assistant.
The catches are coverage and cost. Howie's site lists Gmail and Google Calendar only, with no Outlook integration. Pricing is usage-based: the Team plan starts at $25 a month for 1,250 credits shared by unlimited teammates, but Howie doesn't publish how many credits a meeting uses, so monthly cost is hard to predict. New accounts get $25 in free credits, and an assistant address on your own domain costs $20 a month extra.
Free tier
$25 in free credits to start
Paid from
Team: $25/month for 1,250 shared workspace credits, with usage tiers up to 150,000 credits/month. Custom assistant email at your own domain +$20/month. Enterprise: custom pricing.
What works
- Works over email, SMS and iMessage
- Handles holds, focus time and follow-ups too
- Unlimited teammates share one credit pool
What doesn't
- Gmail and Google Calendar only
- Credits per meeting aren't published
- Own-domain address costs $20 a month extra
Video review: The Best AI Email Assistants in 2026 (9 Tested) by Tool Finder
3. Blockit: Best free plan
- Developer: Blockit AI, Inc.
Blockit has the only free-forever plan here that includes the email agent: 15 meetings a month. You loop it in on email or Slack, and it connects as many Google and Microsoft calendars as you want, reading colleagues' shared calendars directly. You choose how independent it is, from approving every invite to full autopilot, and it understands required versus optional attendees. TechCrunch reported a $5 million Sequoia-led seed in January 2026, and co-founder John Han previously worked on Google Calendar and Clockwise.
Once you outgrow the free plan it gets expensive fast. Lite costs $83 a month billed yearly or $145 monthly for 40 meetings a month, and Infinity costs $395 a month billed yearly for unlimited meetings. A custom domain, SSO and delegate access for assistants need Enterprise, which starts at $20k a year. It doesn't list iCloud or CalDAV support.
Free tier
Free: $0 forever, 15 meetings/month, email and Slack agents
Paid from
Lite: $83/month billed yearly ($999/yr, save 43%) or $145/month billed monthly, 40 meetings/month + proactive agent. Infinity: $395/month billed yearly ($4,740/yr, save 20%) or $495/month billed monthly, unlimited meetings. Enterprise: from $20k/yr annual agreement.
What works
- Free forever for 15 meetings a month
- Unlimited Google and Microsoft calendars
- Adjustable autonomy, from review-all to autopilot
What doesn't
- Paid plans start at $83 a month yearly
- Custom domain and SSO need Enterprise
Video review: The Best AI Email Assistants in 2026 (9 Tested) by Tool Finder
4. Clara: Best for Outlook and confidential client work
- Developer: Clara AI, Inc.
- How you use it: CC Clara on an email thread
- Human in the loop: No: 'No human at Clara ever reads your emails' (fully AI)
Clara is one of the oldest names in email scheduling, and it's still going, now fully AI. Its site says no human ever reads your emails and it never trains on your data, which is why it pitches itself to legal, finance and recruiting firms. It supports Google Workspace and Outlook/Exchange natively, handles group and multi-timezone meetings, and follows up until the meeting is booked. Zapier's September 2026 roundup of AI scheduling assistants picks it for having a virtual assistant in your email.
It's pricey per meeting. Standard costs $80 a month for 30 meetings, and the pricing page doesn't list an annual option. A custom domain and unlimited meetings need Enterprise, which is priced by quote. The free trial covers 14 days and 5 meetings with no credit card.
Free tier
Free: 14 days, 5 meetings, multiple calendars, no credit card
Paid from
Standard: $80/month, 30 meetings, multiple calendars, delegate access, advanced integrations. Enterprise: contact sales; unlimited meetings, custom domain name, admin dashboard, company-wide preferences, data retention.
What works
- Native Outlook and Exchange support
- States no human reads your email
- Picked by Zapier's 2026 roundup
What doesn't
- $80 a month for 30 meetings
- Custom domain only on Enterprise
5. Skej: Best budget CC assistant
- Developer: 3Gen Internet Corporation (New York)
- Human in the loop: No: '100% AI, no humans in the loop'
Skej gives you a named assistant (Lexy, Hubert and ten other personas, or your own) that you CC from any email client, including Gmail, Outlook, Apple Mail, Superhuman and HEY. It schedules, reschedules, cancels and follows up across time zones and languages, and paid plans check multiple Google and Microsoft calendars. It says it's 100% AI with no humans in the loop. We found no named-outlet review of it.
Pro costs $15 per user a month billed annually or $19 monthly, the lowest price here after CalendarBridge. Premium, at $23 annually or $29 monthly, adds Bcc mode where it works unsupervised, custom assistants, Slack and texting. The free plan includes a booking link, but the email assistant is only a 7-day trial with 3 meetings.
Free tier
Free forever: 1 booking link, daily agenda and reminders; email assistant only as a 7-day trial with 3 free meetings
Paid from
Pro: $15/user/month billed annually, $19 billed monthly (email assistant, multiple calendars, unlimited booking links). Premium: $23/user/month billed annually, $29 billed monthly (adds custom assistants, Bcc unsupervised mode, texting/WhatsApp, Slack, team admin). Enterprise: contact sales.
What works
- $15 a month yearly for a CC assistant
- Works from any email client
- Choice of assistant personas and tone
What doesn't
- Free plan excludes the assistant after 3 meetings
- Bcc mode, Slack and texting need Premium
- No named-outlet review found
Video review: Skej: Demo at AI Camp Demo Day by Betaworks
6. Calendly (Callie): Best if you already use Calendly
- Developer: Calendly, LLC
- App Store: 4.8/5 (55,029 ratings) for the Calendly app
- How you use it: Add callie@calendly.com to an email thread
Callie is Calendly's answer: add callie@calendly.com to a thread and it emails the other person a shortlist of your open times, handles changes in the thread and books the meeting. If the other person also uses Calendly, it highlights mutual availability. Zapier's September 2026 roundup picks Calendly for automating meetings end to end, and the Calendly app holds 4.8 out of 5 from more than 55,000 App Store ratings.
Callie needs Standard Plus at $18 per seat a month billed yearly or $24 monthly, and it isn't in the free or base Standard plans. It's labeled Beta, works in English only, and currently handles one-on-one meetings only, with no group scheduling. Calendly connects up to 6 Google, Office 365, Outlook.com and Exchange calendars but no longer accepts new iCloud connections.
Free tier
Calendly Free: 1 event type, 1 calendar connection; no Callie
Paid from
Standard Plus (Standard + Notetaker & Callie): $18/seat/month billed yearly or $24 billed monthly. Teams Plus: $24/seat/month billed yearly or $32 billed monthly. Enterprise: from $15k/yr (50+ seats), Callie on inquiry.
What works
- One address instead of sending booking links
- Built into a mature scheduler
- Calendly app rated 4.8 from 55,000+ ratings
What doesn't
- One-on-one meetings only for now
- Beta, English only, needs the Plus tier
- No new iCloud calendar connections
Video review: Introducing the New Calendly by Calendly
7. Gemini in Gmail (Help me schedule): Best built-in option for Google Workspace
- Developer: Google LLC
- Platforms: Gmail on the web (computer); Google Calendar
- App Store: 4.7/5 (2,439,385 ratings) for the Gmail app
- Human in the loop: You review and send the suggested times yourself
Help me schedule is Gemini's scheduling tool in Gmail, and it isn't really an assistant. You click the button in a draft or reply, Gemini inserts suggested times from your Google Calendar, and when a recipient picks one the invite goes to everyone, including external guests. Since early 2026 it handles group meetings with up to 20 guests. There's nothing to install or CC, and the Gmail app holds 4.7 out of 5 from more than 2 million App Store ratings.
It won't negotiate, follow up or reschedule over email, and it only sees Google Calendar. It runs in Gmail on the web and needs an eligible plan: Workspace Business Standard at $14 per user a month with a one-year commitment, or higher. If you already have that plan it costs nothing extra.
Free tier
None for Help me schedule
Paid from
Workspace editions listed by Google: Business Standard and Plus; Enterprise Starter, Standard and Plus; Frontline Plus; Google AI Pro for Education. Business Standard $14/user/month and Business Plus $22/user/month with a 1-year commitment (annual plan; monthly flexible plan costs more).
What works
- Built into Gmail, nothing to CC
- Handles groups of up to 20 guests
- No extra cost on Business Standard
What doesn't
- Won't negotiate, follow up or reschedule
- Google Calendar only, web only
Video review: NEW Gmail Update: Gemini in Gmail Help Me Schedule Feature by Tasia Custode
How we picked
We ranked these from desk research, not hands-on use. We read each vendor's documentation and live pricing page on September 23, 2026, pulled App Store ratings from Apple's own data, and looked for named outlet coverage such as Zapier's September 2026 roundup of AI scheduling assistants. CalendarBridge is our own product, so we held it to the same facts as everyone else and listed its weaknesses too.
Frequently asked questions
What is an AI email scheduling assistant?
It's a service with its own email address that you CC on a thread, such as Howie, Blockit, Clara, Skej, Calendly's callie@calendly.com or CalendarBridge's assistant@ai.calendarbridge.com. It reads the thread, checks your calendar, proposes times to the other people, handles their replies and sends the invite. Gemini's Help me schedule is different: it's a Gmail button that inserts suggested times, and you send them yourself.
Is there a free AI scheduling assistant?
Blockit is the only one with a free-forever plan that includes the email agent, capped at 15 meetings a month. The rest offer trials: Clara gives 14 days and 5 meetings, Skej a 7-day trial with 3 meetings, Howie $25 in free credits, and CalendarBridge a 7-day trial with no credit card. Calendly's free plan and Gmail without an eligible plan don't include AI scheduling.
Do AI scheduling assistants work with Outlook?
Most do. Clara supports Outlook and Exchange natively, Blockit and Skej connect Microsoft calendars, Calendly supports Office 365, Outlook.com and Exchange, and CalendarBridge supports Microsoft 365, Outlook.com and GCC High. The exceptions: Howie's site lists only Gmail and Google Calendar, and Gemini's Help me schedule is Gmail only.
Can an AI assistant check multiple calendars before proposing times?
Yes, but coverage varies. Blockit connects as many Google and Microsoft calendars as you want, Clara supports multiple calendars on every plan, Skej does on paid plans, and Calendly allows up to 6 but no longer accepts new iCloud connections. CalendarBridge checks every connected calendar across Google, Microsoft, iCloud and CalDAV, and can also sync them to each other.
Do humans read my emails with these assistants?
Mostly not. Clara says no human reads your emails, Skej says it's 100% AI, and CalendarBridge uses no human schedulers. Blockit lets you choose anything from approving every invite to full autopilot, and Calendly's Callie asks before making exceptions to your preferences. GeekWire reported in September 2025 that Howie escalates uncertain cases to human reviewers, and Howie's current site doesn't say either way.