How to sync the Global Address List (GAL) to mobile phones in Microsoft 365
Compare four supported ways to sync the Microsoft 365 GAL to iPhone and Android contacts, including cost, effort, and reliability.
· 8 min
Blog
Microsoft 365 contact sync, Entra ID, and Graph API
Practical, field-tested guides for IT admins. No fluff, no marketing speak, just the mechanics of getting the Global Address List onto people’s phones.
EWS is turning off in October 2026: what contact-sync admins need to do right now
Microsoft retires EWS for Exchange Online on October 1, 2026. Use this checklist to replace EWS contact-sync scripts with Microsoft Graph.
· 7 min
Looking for a CiraSync alternative? The self-hosted options compared (2026)
Compare CiraSync alternatives by price and data residency: self-hosted Microsoft Graph sync, EWS scripts, and sync.blue.
· 6 min
Microsoft Graph API throttling for contact sync: what IT admins need to know
Learn how Graph API throttling affects contact sync and how batching, delta queries, backoff, and bounded concurrency prevent failures.
· 6 min
GAL sync for MSPs: managing contact sync across multiple Microsoft 365 tenants
A scalable MSP pattern for multi-tenant GAL sync, app registrations, RMM deployment, remote administration, and Server Core.
· 5 min
Entra ID contact sync best practices: the 10 rules every admin should follow
Ten practical rules for Entra ID contact sync, covering certificate auth, delta queries, folder strategy, GDPR, photos, and stale contacts.
· 7 min