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Mailbox calendar

The calendar on
the mailbox.

Microsoft 365 events live next to the mail they belong to. We do not read the Calendar app on your iPhone or Android. IMAP accounts (Yahoo, iCloud Mail, Fastmail) are mail only. Google Calendar is not connected until Gmail OAuth asks for it.

Calendar Chaos

Your work uses Outlook. Your spouse shares a Google calendar. Your kid's school uses another Google account. You've got events scattered across 4 different calendars - and you've double-booked yourself again.

Double bookings
Forgot to check the other calendar before accepting
Missed events
Important event was in the calendar you didn't check
App switching
Constantly toggling between calendar apps to see your day
Work (Outlook)
9am: Team standup
2pm: Client call
Personal (Gmail)
12pm: Dentist
6pm: Dinner
Family
3pm: School pickup
Side Project
7pm: Investor call
Conflict: 2pm client call vs 3pm school pickup?

One Unified Calendar View

InflowMail syncs all your calendars from Google and Microsoft, showing everything in one view. See conflicts before they happen.

January 20, 2026

Work
Personal
Family
8 AM
9 AM
10 AM
11 AM
12 PM
1 PM
2 PM
3 PM
Team Standup
9:00 - 9:30 AM
Dentist Appointment
12:00 - 1:00 PM
Client Call
2:00 - 3:00 PM
School Pickup
3:00 PM
Conflict detected!
Email to Calendar

Meetings Found in Your Email. Automatically.

Client sends you a meeting invite in plain text? InflowMail reads the email and surfaces a card: "Meeting detected - Add to calendar?" No copy-pasting dates and times.

Detects meetings in plain-text emails
Pre-fills event title, time, and duration
Choose which calendar to add to
From: Sarah Chen <[email protected]>
Re: Project Timeline Discussion

Hi, let's connect Thursday Feb 27th at 2pm PST to discuss the project timeline. Does that work?

Meeting Detected
Thursday, Feb 27 · 2:00 PM PST · ~1 hour
Project Timeline Discussion with Sarah Chen
Which calendar? Outlook - Work
You → Sarah Chen: Q4 Proposal
Follow-up due: Today
Sent 3 days ago
You set a reminder: "If no reply by Feb 27, remind me"
Sent Feb 24
Reminder: Feb 27 (today)
Follow-up Reminders

Never Forget to Follow Up

Waiting to hear back from a client? Set a follow-up reminder. If they haven't replied by then, we'll nudge you. No more losing track of open threads.

Set reminders on any sent email
Snooze if you need more time
Surfaced in your Daily Briefing each morning

Calendar Features

Multi-Calendar View

See all your Google and Microsoft calendars overlaid in one view

Conflict Detection

Instant alerts when events overlap across any calendar

Color Coding

Each calendar gets its own color for easy visual identification

Smart Reminders

Unified notifications for all calendar events

Day/Week/Month Views

Switch between views to see your schedule your way

Two-Way Sync

Changes sync back to the original calendar

Your Team Is Everywhere. Your Calendar Knows It.

Working with clients in London, teammates in LA, and a developer in Bangalore? InflowMail shows event times in everyone's timezone so you never schedule a 3am call by accident.

🇺🇸
You (Chicago, CST)
2:00 PM
Central Standard Time
🇬🇧
Sarah (London, GMT)
8:00 PM
Greenwich Mean Time
Late night
🇮🇳
Dev Team (Bangalore, IST)
1:30 AM
Next day - consider rescheduling

Timezone detection is automatic based on your contacts' locations.

Syncs With

Google Calendar
Not connected yet
Outlook Calendar
Smart Extraction

Events Hiding in Your Email? We Find Them.

Not every meeting comes as a calendar invite. Clients say "let's meet Tuesday at 3pm" in a regular email. Vendors send deadline reminders in plain text. InflowMail's AI scans your emails for dates, times, and event-like language - surfacing them as actionable cards you can add to any calendar with one click.

Extracts dates, times, and locations from email text
Handles flight confirmations, hotel bookings, restaurant reservations
One click to add to a connected Microsoft 365 calendar
Events found in your email
Flight SFO → NYC
Travel
Mar 20, 2026 · 8:30 AM PST · Delta Airlines
+ Add to calendar
Dinner at Nobu
Reservation
Mar 21, 2026 · 7:00 PM EST · Party of 4
+ Add to calendar
Contract deadline
Deadline
Mar 31, 2026 · End of day · Vendor renewal
+ Add to calendar

Calendar FAQ

Does it sync two-way with my calendars?
Microsoft 365 mailbox calendars sync through Graph. Creating or changing an event in InflowMail writes back to that Outlook calendar. Google Calendar is not in the live OAuth scope yet - do not expect Gmail calendars to appear until we add that and you reconnect. We never write to the Calendar app on your phone.
Can I create events directly from emails?
Yes. When InflowMail detects a meeting or event in an email, it shows a "Meeting Detected" card with pre-filled details (date, time, title, attendees). Click "Add to Calendar" and choose which calendar to add it to. You can also manually create a calendar event from any email.
How does timezone support work?
Events display in the timezone of the mailbox calendar they came from. We do not infer a contact’s timezone from their location or email history.
Which calendar providers are supported?
Microsoft 365 / Outlook mailbox calendars, yes. Google Calendar, not until we request Calendar access on Gmail connect. Yahoo, iCloud Mail, Fastmail, and other IMAP hosts have no calendar API. The Calendar app on an iPhone or Android is never read.

See Your Whole Schedule

Unify your calendars today. Get started free.

Get started free